div滤镜结合ajax，实现登录
一：登陆页面
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd">
<HTMLxmlns="http://www.w3.org/1999/xhtml"><HEAD><TITLE>test</TITLE>
<META http-equiv=Content-Type content="text/html; charset=utf-8">
<SCRIPT type=text/javascript>
/*
此方法用于程序中动态请求JS，并且浏览器可以缓存，以后不必再请求
*/
document.include = function (jsSrc,jsName,onLoadComplete,onLoadError) {
var head = document.getElementsByTagName("head")[0];
var scripts = head.getElementsByTagName("script");
for (var i = 0; i < scripts.length; i++) {
var src = scripts[i].src;
src=src.substr(src.lastIndexOf('/')+1);
if (src == jsSrc) {
return false;
}
}
var script = document.createElement("script");
script.language = "javascript";
script.id = jsName;
script.src = jsSrc;
script.defer = true;
script.onload=onLoadComplete;
script.onreadystatechange=function(){
if(this.readyState=="loaded"||this.readyState=="complete"){
onLoadComplete();
}
};
script.onerror=onLoadError;
head.appendChild(script);
return true;
}
/**
* 如何操作cookie
* 本类是用来封装操作cookie的方法
*/
var cookie=new Object();
// 读方法
cookie.getCookie=function(cookieName,defaultValue){
var lowerCookieName = cookieName.toLowerCase();
var cookieStr = document.cookie;
if (cookieStr == "")
{
return defaultValue;
}
var cookieArr = cookieStr.split("; ");
var pos = -1;
for (var i=0; i<cookieArr.length; i++)
{
pos = cookieArr[i].indexOf("=");
if (pos > 0)
{
if (cookieArr[i].substring(0, pos).toLowerCase() == lowerCookieName)
{
return decodeURIComponent(cookieArr[i].substring(pos+1, cookieArr[i].length));
}
}
}
return defaultValue;
}
// 写方法
cookie.writeCookie=function(cookieName, cookieValue, expires){
if (expires)
{ //指定了 expires
document.cookie = cookieName + "=" + encodeURIComponent(cookieValue) + "; expires=" + expires.toGMTString();
}
else
{
document.cookie = cookieName + "=" + encodeURIComponent(cookieValue);
}
}
/**
* cookie缓存对象
* 本类是用来封装一个在cookie中缓存的一个用户对象，该对象的字段都应该被缓存到cookie中，而且可以从cookie中读取以创建此对象
* 需要cookie类来支持cookie的操作
*/
userModel=function(){
var model=new Object();
this.get=function(name){
model[name]=cookie.getCookie(name,model[name]);
return model[name];
};
this.set=function(name,value){
if(!(model[name]==undefined))
{
model[name]=value;
cookie.writeCookie(name, value, null);
};
}
}
/*===================================入口================================================*/
function indexInit(){
// 自己根据ajax来得到要执行那句
if(false)
{
document.getElementById("layer").style.display="none";
}
}
</SCRIPT>
</HEAD>
<BODY onload=indexInit()>
<STYLE>
DIV.layer1 {
Z-INDEX: 10; LEFT: 0px; WIDTH: 100%; POSITION: absolute; TOP: 0px; TOP: expression(documentElement.scrollTop); HEIGHT: 100%
}
</STYLE>
<!--***************************************提示层********************************************-->
<DIV id=layer>
<!--遮蔽层1-->
<DIV class=layer1 style="FILTER: alpha(opacity = 80); BACKGROUND-COLOR: #111111; moz-opacity: 0.8; opacity: 0.8">
<TABLE align=center name="btnTable">
<TBODY>
<TR><TD COLSPAN="2"><SPAN STYLE="COLOR:RED">状态信息:页面载入中...</SPAN></TD></TR>
<TR>
<TD><INPUT style="WIDTH: 60px" type=button value=重试 name=retryBtn></TD>
<TD><INPUT style="WIDTH: 60px" type=button value=取消 name=cancelBtn></TD></TR></TBODY></TABLE>
</DIV>
</DIV>
<!--***************************************显示数据层********************************************-->
<DIV id=loginDiv>
<TABLE cellSpacing=0 cellPadding=0 width=900 align=center border=0><TBODY>
<TR vAlign=top>
<TD><BR>
<P class=redAndBold>重要通知：</P>
<IFRAME id=newsFrame
src="newslist.htm" frameBorder=0 width=450
scrolling=no height=400></IFRAME><BR></TD></TR></TBODY></TABLE>
</DIV>
</BODY></HTML>
二：登陆页面引入的文件：newslist.html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3c.org/TR/1999/REC-html401-19991224/loose.dtd">
<!-- saved from url=(0044)http://news.etest.edu.cn/JLPT/1/newslist.htm -->
<HTML xmlns="http://www.w3.org/1999/xhtml"><HEAD>
<META http-equiv=Content-Type content="text/html; charset=utf-8">
<SCRIPT type=text/javascript>
function openNew(htm,width,height){
window.open(htm,'detail','scrollbars=yes,resizable=yes,width='+width+',height='+height);
return false;
}
</SCRIPT>
<META content="MSHTML 6.00.2900.3354" name=GENERATOR></HEAD>
<BODY>
<TABLE cellPadding=5 width=400 border=0>
<TBODY>
<TR style="FONT-SIZE: 12px">
<TD width=29> </TD>
<TD width=800>
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